<!DOCTYPE HTML>
<html lang="en-US">
<head>
	<meta charset="UTF-8">
	<title>I'm test1.html</title>
</head>
<body>
	<script type="text/javascript">
	var if_arr=[];
	var if_arr1=[1,2,3,4,4,undefined,5,5];
	</script>
</body>
</html>